Home / 20,577.59-28,393.32-12,080.07

Finding the Fourth Proportional to 20,577.59, 28,393.32 and 12,080.07

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Solution

The fourth proportional to 20,577.59, 28,393.32 and 12,080.07 is: 16,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.59 : 28,393.32 = 12,080.07 : x
  2. Step 2: Convert to fraction form
    20,577.59/28,393.32 = 12,080.07/x
  3. Step 3: Cross multiply
    20,577.59x = 28,393.32 × 12,080.07
  4. Step 4: Simplify right side
    20,577.59x = 342,993,338.43
  5. Step 5: Solve for x
    x = 342,993,338.43/20,577.59
  6. Step 6: Final answer
    x = 16,668.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.